For the young sisters in the Mohler family, summers were the worst because that's when they had to go to their grandfather's farm.

That's what the sisters, now grown women, have told authorities who on Thursday filed 11 more charges in a child sex abuse case that has shocked the country.

In court documents to support the latest charges, the sisters told of bestiality, mock weddings, sex in a church and being made to have sexual contact with each other while their father, grandfather and uncles watched and laughed.

Thursday's charges, which raise the total to 42, could be the last in the Lafayette County case that has seen a 77-year-old Independence grandfather and his four middle-age sons arrested and locked up in the jail in Lexington, Mo. The men are alleged to have committed rape, sodomy and other assaults against children in the extended family for years.

Acting on evidence that some of the assaults were photographed, investigators searched the home of the grandfather, Burrell Mohler Sr., and found incest pornography, videotapes and recording equipment.